OpenCart 1.5
OpenCart is an open source PHP-based online shopping cart system. A robust e-commerce solution for Internet merchants with the ability to create their own online business and participate in e-commerce at a minimal cost.
OpenCart is designed feature rich, easy to use, search engine friendly and with a visually appealing interface.Version : 1.5.6.4

AbanteCart
Abante Cart is a free PHP based eCommerce solution for merchants to provide ability creating online business and sell products online quick and efficient.
AbanteCart application is built and supported by experienced enthusiasts that are passionate about their work and contribution to rapidly evolving eCommerce industry.
AbanteCart is more than just a shopping cart, it is rapidly growing eCommerce platform with many benefits. Version : 1.2.1

WHMCS
WHMCS is an all-in-one client management, billing and support solution for online businesses. WHMCS handles everything from signup to termination, with automated billing, provisioning and management. With WHMCS, you're in control with a very powerful business automation tool. You will need a License to install and run WHMCS. Version : 5.3.12

osCommerce
osCommerce is an online shop e-commerce solution that offers a wide range of out-of-the-box features that allows online stores to be setup fairly quickly with ease, and is available for free as an Open Source based solution.Version : 2.3.4

Loaded 7
Loaded 7 is a responsive ecommerce web application.
Based on a 3rd generation e-commerce platform, Loaded 7 includes new mobile responsive template in both admin and catalog.Version : 7.003.2.0

Zen Cart
Zen Cart truly is the art of e-commerce; free, user-friendly, open source shopping cart software. The ecommerce web site design program is being developed by group of like-minded shop owners, programmers, designers, and consultants that think ecommerce web design could be and should be done differently.Version : 1.5.4

TheHostingTool
TheHostingTool is aiming to provide the next generation in free, hosting applications. It provides you, the webhost, near complete automation on everything you want it to do. So that means, signup, monthly posts checking, suspension, and termination.
While it does that, it provides client features, like the client control panel that gives the clients the power to manage their account.Version : 1.2.6

TomatoCart
TomatoCart is open source shopping cart software using the ExtJS RIA framework, which makes it second-to-none friendly to users. TomatoCart covers nearly all the features a shopping cart could ever have and is continuing progressing with its roadmap.
TomatoCart can hardly tear yourself away from the desktop-and-multiwindow administration panel with other shopping cart solution experience. Version : 1.1.8.6.1

OpenCart
OpenCart is an open source PHP-based online shopping cart system. A robust e-commerce solution for Internet merchants with the ability to create their own online business and participate in e-commerce at a minimal cost.
OpenCart is designed feature rich, easy to use, search engine friendly and with a visually appealing interface.Version : 2.0.1.1

Avactis
Avactis offers an extremely convenient set of tools to quickly launch an online business.
Avactis Shopping Cart is a software package that allows you to open an online store on the Internet. Compared to other similar software, Avactis offers a unique advantage of very simple integration of the online store into your existing site.
For many similar systems, integration of an online store is a big problem that requires a lot of time and effort. Avactis eliminated this labor-intensive task by using special tags. As a result avactis can offer their customers a very convenient tool for the quick launch of an online business. Version : 4.7.3

LiteCart
LiteCart is a new innovative free shopping cart platform developed in PHP. Founded by swedish developer T. Almroth. Based on the latest modern technology such as PHP 5.3+, jQuery, HTML 5 and CSS 3. Logical design and a simple to use interface. The framework is constructed to be lightweight and easy for developers to modify and build upon. Version : 1.2.1

CubeCart
CubeCart is a complete ecommerce shopping cart software solution. With CubeCart you can quickly setup a powerful online store to sell digital or tangible products to new and existing customers globally.
Established in 2003 CubeCart is a hugely popular eCommerce solution enjoyed by tens of thousands of merchants globally. Version : 5.2.16

AlegroCart
AlegroCart is a free open source e-commerce shopping cart solution based on MVC Framework. You can have your own shopping cart operational in a very short time, which can be managed through administration by you and your staff.
AlegroCart comes with a modular template system that features separate style folders. Templates, Styles, Colors, and page layouts as well as module layout are all set by the template manager in admin. Version : 1.2.8

Open Source Point of Sale
Open Source Point of Sale is a point of sale system built on top of a CodeIgniter base. It therefore is written in PHP and uses MySQL as the database backend for data storage.
This means that it'll run on any system with a web browser and can be run on a local server or hosted for multiple clients to access.
Version : 2.3

CS-Cart
CS-Cart is highly customizable software, it provides full access to the source code, and there are no encrypted files in it. Thanks to this it is possible to make any changes, integrations and modifications according to the users’ specific needs. CS-Cart is built using PHP and MySQL, AJAX technologies are utilized as well. Design architecture of CS-Cart is based on Smarty template engine that, along with completely CSS-based template layout, makes it very simple to change the look-and-feel of the storefront.
Apart from a bundle of features and add-ons, included into the software by default, there are many add-ons and themes, created by third-party developers, which are listed in CS-Cart Marketplace (http://marketplace.cs-cart.com/) Version : 4.2.4

phpCOIN
phpCOIN is a free WebWare package originally designed for web-hosting resellers.
phpCOIN helps resellers to handle clients, orders, invoices, notes and helpdesk, but no longer limited to hosting resellers. Version : 1.6.5

SeoToaster Ecommerce
SeoToaster E-commerce includes SeoToaster CMS to combine a powerful CMS, a private member area, a blog, a mobile wireframe, but also an advanced shopping cart, a B2B web quoting tool, and an impressive SEO & marketing feature set.
SeoToaster is the only solution you will ever need, whether to run 1 or hundreds of world-class eCommerce business. Version : 2.3.0

Blesta
Blesta Automatically Invoice & Manage Clients With Ease.
Blesta is a well written, secure, user and developer friendly client management, billing, and support application. Written in PHP on our very own open source minPHP MVC framework, Blesta is object oriented and extendableVersion : 3.4.2

Zeuscart
Zeuscart shopping cart is based on PHP application and it is used as scripting language which facilitates developer in making dynamically driven websites. It is very facile to learn and understand.
Zeuscart is an incredibly stable & richly-interfaced, open source shopping cart and it's a simple E-commerce software package which allows, even a non-technical person to open an online store on the Internet, with minimal efforts.
Zeuscart is a web-based PHP/My SQL shopping cart which is simple, powerful and easy to use. Zeuscart includes a number of marketing-tailored features that can help you increase your online sales, promote repeat purchases, and boost customer satisfaction. Version : 4.0

Open eShop
Open eShop is a PHP script which allows you to start selling any digital good, like MP3, eBooks, Movies, Software.. or any Service you offer. Just within minutes in your own hosting.
With OE you will be able to give support to your customers from the panel and notify of new updates to your buyers. You can also auto generate license numbers to your sales. Version : 1.7.1

Thelia 2
Thelia 2 E-commerce software, useful to create and manage online stores, published under a free license. Developed in accordance to web development standards and based on Symfony 2, Thelia meets the following objectives : performance and scalability. Thanks to its features, Thelia helps merchants to improve the management of their business, their sales and turnover.Version : 2.1.2

ClientExec
ClientExec offers online help desk software intended to enhance the ability of small and mid-sized hosting businesses to manage help and support issues. Because the online help desk software can be accessed from any web browser, managers and staff can increase the flexibility and effectiveness with which they address client support issues.
ClientExec's software includes an easy-to-use interface that enhances communication between clients and staff. E-mail messages sent through the online help desk software are automatically routed and tracked, so you don't have to spend time chasing after lost messages. Support tickets can be quickly sorted, filtered, and assigned to individual team members, ensuring that the tickets are addressed in the most efficient possible manner.Version : 5.2.1

Invoice Ninja
Invoice Ninja is a solution for invoicing and billing customers. With Invoice Ninja, you can easily build and send beautiful invoices from any device that has access to the web. Your clients can print your invoices, download them as pdf files, and even pay you online from within the system.Version : 1.6.1

Shopware
Shopware is a highly flexible, powerful and customizable software solution that allows you to quickly and easily create an online shop, regardless of your store requirements.
Shopware is based on novel eCommerce technologies, provides highly innovative marketing tools and includes integrated SEO functionalities, all of which are the basis for any successful online business. An intuitive interface and simple-to-use backend make the software the optimal choice for users, as well as designers, developers and decision makers. Version : 4.3.2

ShopSite
ShopSite is the easiest-to-use shopping cart software for small to medium-sized businesses. With our e-commerce software and intuitive interface, you can have a store online in 15 minutes. With our rich feature set you won't outgrow our catalog software, and you will not need expensive add-ons in order to have a fully functioning cart.
With our rich feature set you won't outgrow our catalog software, and you will not need expensive add-ons in order to have a fully functioning cart. Version : 11.2.3